Lorier Neptune SIVvsZenith Defy Revival A3643

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Measurements

Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Lorier Neptune SIV at true scale

Neptune SIV

Zenith Defy Revival A3643 at true scale

Defy Revival A3643

Diameter

39mm

37mm

Water Resistance

200m

300m

highest

Power Reserve

n/a

50h

MSRP

$599

lowest

$7,800

Movement

Automatic

n/a

Case

4 specs
Diameter
39mm
37mm
Lug Width
20mm
n/a
Finish
n/a
Stainless steel
Water Resistance
200m
300m

Crystal & Dial

2 specs
Crystal
Sapphire
n/a
Dial Color
Standard
Silver

Movement

5 specs
Type
Automatic
n/a
Beat Rate
0 vph
28,800 vph
Power Reserve
0h
50h
Hacking
No
Yes
Hand-winding
No
Yes

Pricing

1 specs
MSRP
$599
$7,800
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Lorier Neptune SIV

Owners widely praise the Lorier Neptune SIV for its balanced, vintage-inspired design and affordability, making it a versatile choice for daily wear. The fully brushed flat-link bracelet is noted for its comfort and taper, though some find its feel less luxurious than higher-end options. A minority of owners express a preference for sapphire over the acrylic crystal and find its case proportions less refined than a competitor. Overall, owners rate the Lorier Neptune SIV highly for its vintage aesthetic and value proposition.

Zenith Defy Revival A3643

Owners widely praise the Zenith Defy Revival A3643 for its faithful 1969 reissue, featuring a crisp silver sunburst dial, sharp hands, and a sculptural 14-sided bezel within an eight-sided case. Its 37mm size and case geometry allow it to wear vintage without feeling top-heavy, and the 300m water resistance makes it a chic dive watch. The Gay Frères-inspired ladder bracelet, though divisive, offers comfortable wear with period correctness. One owner notes the lume is significantly brighter than on other Zenith models. Accuracy figures vary, with one owner reporting -5 seconds per day and another experiencing -10 to -15 seconds per day issues. The price is $7,800. Overall, owners rate the Zenith Defy Revival A3643 highly for its faithful reissue and comfortable wearability at the price.

From video reviewers

The octagonal case and fourteen-sided bezel are consistently praised. The 15mm thickness is considered substantial for the 37mm case size.